There are more than one hundred drivers entered across NASCAR’s three national series for this coming weekend’s tripleheader at Phoenix International Raceway. At this point of the post-season, just three are certain they’ll be racing for a championship the following weekend in Miami. In the Sprint Cup Series, Carl Edwards and Jimmie Johnson have advanced by virtue of victories in the semifinal round of the Chase. Six drivers remain in contention for the final two spots, with Kevin Harvick and Kurt Busch – both former champions – likely facing a must-win situation to move on. In the inaugural Truck Series Chase, Johnny Sauter has swept the first two races in the Round of Six and will seek his first championship next week in Miami. Five drivers are left to battle for the three other spots. And in the X-FINITY Series, six drivers are currently in the mix for a berth in The Championship Four that will head to South Florida for the November 19th season finale.